Murali N. Vilayannur

9700 S Cass Avenue, D-239, Building 221, Argonne National Labs, Argonne, IL 60439	Phone: H: 630-748-0057, O: 630-252-7198
http://www.cse.psu.edu/~vilayann/	e-mail: vilayann@mcs.anl.gov

Research Interests

High-Performance Input/Output Storage Systems, File Systems, Compilers and Programming Languages, Operating Systems, Data structures and algorithms for I/O.

Education

Postdoctoral Staff	Aug 05 - Present
Mathematics and Computer Science Division,
Argonne National Laboratory, Argonne, IL, USA.
Supervisors: Dr. Rajeev Thakur & Dr. Robert Ross
Doctor of Philosophy	Aug 99 - Aug 05
Computer Science & Engineering,
Thesis title: Runtime Support for Effective Memory Management in Large-scale Applications,
Pennsylvania State University, State College, PA, USA.
Advisors: Dr. Anand Sivasubramaniam & Dr. Mahmut Kandemir
Bachelor of Technology	May 95 - July 99
Department of Computer Science & Engineering,
Institute of Technology - BHU, Varanasi, India
GPA: 9.59/10

Experience

Postdoctoral Staff, Mathematics & Computer Science Division,	Aug 05 - present
Research Aide, Mathematics & Computer Sciences Division,	May 04 - Aug 04
Argonne National Laboratory, Argonne, IL 60439	Jun 02 - Dec 02
As part of an ongoing research effort, I am investigating performance trade-offs due to aggressive file system caching and consistency semantics dictated by application needs and looking at meaningful ways of expressing consistency requirements that can be exploited by the underlying parallel file system (PVFS2, CAPFS). Prior projects in the past explored techniques to enhance the performance and isolate potential bottlenecks in the POSIX I/O interface implementation of a parallel file system (PVFS).

Research Assistant, Computer Systems Research Lab,	May 01 - Present
Pennsylvania State University, State College, PA 16802	May 00 - Aug 00
As part of my thesis research, I am investigating run-time system support for effective buffer management of large-scale scientific applications. More specifically, I have been looking at efficient caching and replacement algorithms for explicitly I/O intensive and scaled versions of in-core applications.

Teaching Assistant, Dept. of Computer Science & Engineering,	Aug 00 - May 01
Pennsylvania State University, State College, PA 16802	Aug 99 - May 00
Graded and evaluated project assignments for both graduate and undergraduate level courses on operating system design. Instructed a sophomore level course on Digital logic design and a freshmen level course on programming in C++.

Publications

Murali Vilayannur, Anand Sivasubramaniam, Mahmut Kandemir. Anticipatory Memory Management for Scientific Applications: A Characterization, In submission to IEEE Transactions on Computers..

Murali Vilayannur, Mahmut Kandemir, Anand Sivasubramaniam. Synergic Scheduling for Memory-intensive Applications, In submission.

Murali Vilayannur, Partho Nath, Anand Sivasubramaniam. Providing Tunable Consistency for a Parallel File Store, To appear in the Proceedings of the Fourth USENIX Conference on File and Storage Technologies, FAST'05.

Murali Vilayannur, Anand Sivasubramaniam, Mahmut Kandemir. Pro-active Page Replacement Algorithm for Scientific Applications: A Characterization, Proceedings of the 2005 IEEE International Symposium on Performance Analysis of Systems and Software, ISPASS'05.

Murali Vilayannur, Robert Ross, Philip Carns, Rajeev Thakur, Anand Sivasubramaniam, Mahmut Kandemir. On the Performance of the POSIX I/O interface to PVFS, Proceedings of the 12$^{th}$ Euromicro Workshop on Parallel, Distributed, and Network-Based Processing, PDP 2004.

Murali Vilayannur, Anand Sivasubramaniam, Mahmut Kandemir, Rajeev Thakur, Robert Ross. Discretionary Caching for I/O on clusters, To appear in Cluster Computing: The Journal of Networks, Software Tools and Applications.

Murali Vilayannur, Anand Sivasubramaniam, Mahmut Kandemir, Rajeev Thakur, Robert Ross. Discretionary Caching for I/O on clusters, Proceedings of the IEEE/ACM International Conference on Cluster Computing and Grid, CCGrid 2003.

Murali Vilayannur, Mahmut Kandemir, Anand Sivasubramaniam. Kernel-level Caching for I/O by exploiting Inter-Application Data Sharing, Proceedings of the IEEE International Conference on Cluster Computing, CLUSTER 2002.

K. K. Shukla, R. K. Biswal, V. N. Murali, D. Venkatesh, R. N. Mukherjee. On Some New Improved Algorithms for Digital Watermarking, Proceedings of the 4$^{th}$ International Conference on Advances in Pattern Recognition and Digital Techniques, ICAPRDT 1999.

Course work

Operating Systems Design, Optimizing Compilers, Database Management Systems, Multiprocessor Architectures, Design and Analysis of Algorithms, Digital Systems Design, Component-Based Software Engineering, Distributed Systems, Science of Computer Programming, Computer Networks, Combinatorial Optimization.

Projects

• Designed and implemented a Relational Database Management System (as a group project) with distributed resource managers that supported 2-Phase locking, transactions and log-based crash recovery as part of a course project(C).
• Designed and implemented a User-level Threads Library package for Solaris using kernel-aware entities (LWP's), similar to the Pthreads/Solaris thread library interface as part of a graduate level course on Operating Systems(C).
• Implemented a Remote Procedure Call Mechanism similar to the Sun RPC package using the Pthreads library and sockets API on Solaris as part of a graduate level course on Operating Systems(C).
• Developed an execution-driven simulator that simulates a cc-NUMA machine's (SGI-Origin) memory system that can be used to investigate the performance of parallel applications as part of a graduate level course on Multiprocessor architectures(C).
• Designed and implemented new algorithms for demonstrating Steganography, i.e. hiding text in images (as a group project) as part of an under-graduate thesis(Visual C++).
• Implemented a type-inference engine for an extension of lambda calculus for a graduate level course on logic programming(Lambda Prolog).

Professional Activities

• Reviewer for ICPP 2000, CAC Workshop 2002, CASES 2002, CLUSTER 2002, CLUSTER 2003, HiPC 2003, ICPADS 2004, IEEE-TPDS 2004, ACSAC 2004, HPCA (2004,2005,2006), ICPP (2000, 2005).
• Student member of IEEE & ACM.
• Program Committee Member for ICPADS 2006, CLUSTER 2006

Honors/Awards

• Best Research Assistant Award, Department of Computer Science & Engineering, 2005
• University Gold Medal for $1^{st}$ rank in Undergraduate Computer Science Batch of 1999 at IT-BHU.
• Recipient of the prestigious J. N. Tata Endowment for Higher Education.
• Received University Merit award for academic excellence in 1996, 1998, 1999.
• Ranked in the top 1% of over 0.1 million candidates who appeared for the Joint Entrance Examination for admission to the IIT's and IT-BHU, India.

Computer Skills

• Programming Languages: - C, C++, Java, Pascal, Prolog, SML, SPARC Assembly
  
• Operating Systems and Platforms: - Unix(Linux, Solaris), Proficient with Linux kernel internals.
  
• Hardware: - SPARC, Intel X86.
  
• Other Tools: - MPI, MPI-IO, SUIF, CSIM, MATLAB, Lex, Yacc.

References

• Dr. Anand Sivasubramaniam.
• Dr. Mahmut Kandemir.
• Dr. Rajeev Thakur.
• Dr. Robert Ross.